Datasheet tda9808 DATASHEETS (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TDA9808

Single standard VIF-PLL with
QSS-IF and FM-PLL demodulator

Preliminary specification
File under Integrated Circuits, IC02

February 1995

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF

TDA9808

and FM-PLL demodulator

FEATURES

• 5 V positive supply voltage

• Applicable for IF frequencies of 38.9 MHz, 45.75 MHz

and 58.75 MHz

• Gain controlled wide band VIF-amplifier (AC-coupled)

• True synchronous demodulation with active carrier

regeneration (very linear demodulation, good
intermodulation figures, reduced harmonics, excellent
pulse response)

• VIF AGC detector for gain control, operating as peak
sync detector

• Tuner AGC with adjustable take over point (TOP)

• AFC detector without extra reference circuit

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

V

P

I

P

V

i VIF

V

o CVBS

positive supply voltage (pin 18) 4.5 5 5.5 V
supply current 72 85 98 mA
vision IF input signal sensitivity (RMS value; pins 1 and 2) − 60 100 µV

CVBS output signal on pin 9 (peak-to-peak value) 1.2 1.35 1.5 V
B −3 dB video bandwidth on pin 9 7 8 − MHz
S/N (W) weighted signal-to-noise ratio for video 56 60 − dB

α
α
α

V
V

0.92

2.76
H
i SIF
o

intermodulation attenuation 58 64 − dB

suppression of harmonics in video signal 35 40 − dB

sound IF input signal sensitivity (RMS value; pins 19 and 20) − 50 100 µV

audio output signal for FM standard M, N (RMS value; 25 kHz

modulation)
THD total harmonic distortion; 25 kHz modulation for FM − 0.15 − %
S/N (W) weighted signal-to-noise ratio; 25 kHz modulation for FM − 60 − dB

• SIF input for Single Reference QSS mode (PLL
controlled); SIF AGC detector for gain controlled SIF
amplifier; Single Reference QSS for high performance

• AC coupled limiter amplifier for sound intercarrier signal

• PLL-FM demodulator with high linearity, alignment-free

• Stabilizer circuit for ripple rejection and to achieve

constant output signals.

GENERAL DESCRIPTION

The TDA9808 is an integrated circuit for singlestandard
(negative modulated) vision IF signal processing and FM
demodulation, with single reference QSS-IF in TV and
VTR sets.

58 64 − dB

− 0.5 − V

ORDERING INFORMATION

EXTENDED

TYPE NUMBER

TDA9808 20 DIL plastic SOT146

TDA9808T 20 SO plastic SOT163A

Note

1. SOT146-1; 1996 November 22.

2. SOT163-1; 1996 November 22.

February 1995 2

PINS

PIN

POSITION

PACKAGE

MATERIAL CODE

(1)

(2)

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

February 1995 3

Fig.1 Block diagram.

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

PINNING

SYMBOL PIN DESCRIPTION

V

i VIF

TADJ 3 tuner AGC takeover adjust

T

PLL

C

SAGC

V

o AF

C

AF

C

Vp/2

V

o CVBS

V

o QSS

V

i FM

TAGC 12 tuner AGC output
AFC 13 AFC output
VCO1 14 VCO reference circuit for 2f
VCO2 15
GND 16 ground
C

VAGC

V

P

V

i SIF

1 VIF differential input signal
2

(TOP)
4 PLL loop filter
5 SIF AGC capacitor
6 audio frequency output
7 decoupling capacitor
8V

/2 reference capacitor

P

9 CVBS output signal

10 single reference QSS output
11 sound intercarrier input

17 VIF AGC capacitor
18 positive supply voltage
19 SIF differential input signal
20

PC

TDA9808

Fig.2 Pin configuration.

February 1995 4

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

FUNCTIONAL DESCRIPTION
Vision IF amplifier

The vision IF amplifier consists of three AC-coupled
differential amplifier stages. Each differential stage
comprises a controlled feedback network by means of
emitter degeneration.

Tuner and VIF AGC

The AGC capacitor voltage is transferred to an internal IF
control signal, to control the vision IF amplifier. Additionally
it is fed into the tuner AGC amplifier to generate the tuner
AGC output current on pin 12 (open-collector output). The
tuner AGC take over point can be adjusted at pin 3. This
allows the tuner and the SWIF filter to be matched to
achieve the optimum IF input level.
The AGC detector charges/discharges the AGC capacitor
to the required voltage for setting of VIF and tuner gain in
order to keep the video signal at a constant level.
Therefore the sync level of the video signal is detected.

Frequency-Phase detector (FPLL)

The VIF amplifier output signal is fed into a frequency
detector and into a phase detector via a limiting amplifier.
During acquisition the frequency detector produces a DC
current which is proportional to the frequency difference
between the input and the VCO signal. After frequency
lock-in the phase detector produces a DC current
proportional to the phase difference between the VCO and
the input signal. Via the loop filter the DC current of either
frequency detector or phase detector is converted into a
DC voltage, which controls the VCO frequency.

VCO and AFC

TDA9808

Video demodulator and amplifier

The video demodulator is realized by a multiplier which is
designed for low distortion and large bandwidth. The vision
IF input signal is multiplied with the ‘in phase’ VCO output
signal.
The demodulator output signal is fed via an integrated
low-pass for attenuation of the carrier harmonics to the
video amplifier. The video amplifier is realized by an
operational amplifier with internal feedback and high
bandwidth. A low-pass filter is integrated to achieve an
attenuation of the carrier harmonics. The video output
signal at pin 9 is 1.35 V (p-p) for nominal vision IF
modulation.

SIF amplifier and AGC

The sound IF amplifier consists of two AC coupled
differential amplifier stages. Each differential stage
comprises a controlled feedback network provided by
emitter degeneration.
The SIF AGC detector is related to the SIF signals
(average level of FM carriers) at pin 19 and pin 20 (SIF
input) and controls the SIF amplifier to provide a constant
SIF signal at the SIF amplifier output.

Single reference QSS mixer

The single reference QSS mixer is realized by a multiplier.
The SIF amplifier output signal is fed to the single
reference QSS mixer and converted to intercarrier
frequency by the regenerated picture carrier (VCO). The
mixer output signal is fed via a high-pass for attenuation of
the video signal components to the output pin 10. With this
system a high performance Hi-Fi stereo sound processing
can be achieved.

The VCO operates with a symmetrically connected
resonance circuit (with L and C in parallel). It is tuned to the
double VIF picture carrier frequency. The VCO is
controlled by two integrated varicaps. The control voltage
required to tune the VCO from its free running frequency
to actual double the PC frequency is generated by
the frequency-phase detector and fed via the loop filter to
the first varicap (FPLL). This control voltage is amplified,
and additionally converted into a current which represents
the AFC output signal. At centre frequency the AFC output
current is equal to zero.
The oscillator signal is divided-by-two. Two differential
output signals were generated with 90 degree phase
difference independent of the frequency.

February 1995 5

FM detector

The FM detector consists of a limiter, an FM-PLL and an
AF amplifier. The limiter provides the amplification and
limitation of the FM sound intercarrier signal before
demodulation. The result is high sensitivity and AM
suppression. The amplifier consists of 7 stages which are
internally AC coupled in order to minimize the DC offset
and to save pins for DC decoupling.

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

The FM-PLL consists of an integrated RC oscillator, an
integrated loop filter and a phase detector. The oscillator is
locked to the limited FM intercarrier signal. As a result of
locking, the oscillator tracks with the frequency modulation
of the input signal. The oscillator control voltage is
superimposed by the AF voltage. By this way the FM-PLL
operates as an FM-demodulator.
The AF amplifier consists of two parts:

1. The AF pre-amplifier is an operational amplifier with
internal feedback, high gain and high common mode
rejection. The AF output voltage from the PLL
demodulator, by principle a small output signal, is
amplified by approximately 33 dB. The low-pass
characteristic of this pre-amplifier reduces the
harmonics of the intercarrier signal at the sound output
terminal.
An additional DC control circuit is implemented to keep
the DC level constant, independent of process
spreadings.

TDA9808

2. The AF output amplifier (10 dB) provides the required
output level by means of a rail-to-rail output stage.

Internal voltage stabilizer and V

The bandgap circuit internally generates a voltage of
approximately 1.25 V, independent of supply voltage and
temperature.
A voltage regulator circuit, connected to this voltage,
produces a constant voltage of 3.6 V which is used as an
internal reference voltage.
For all audio output signals this constant reference voltage
cannot be used because large output signals are required.
Therefore these signals refer to half the supply voltage to
achieve a symmetrical headroom, especially for the
rail-to-rail output stage. For ripple and noise attenuation
the V

/2 voltage has to be filtered via a low-pass by using

P

an external capacitor at pin 8 together with an integrated
resistor (fg≈ 5 Hz). For a fast setting to VP/2 an internal
start-up circuit is added.

/2-reference

P

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER MIN. MAX. UNIT

V

P

supply voltage (pin 18) for a maximum
chip temperature (note 1)

SOT146 at +120 °C − 7.6 V
SOT163A at +120 °C − 5.9 V

V

i

t

s max

V

12

T

stg

T

amb

V

ESD

voltage at pins 1 to 8, 11 to 13, 16 to 20 0 5.5 V
maximum short-circuit time − 10 s
tuner AGC output voltage 0 13.2 V
storage temperature −25 +150 °C
operating ambient temperature −20 +70 °C
electrostatic handling for all pins (note 2) −±300 V

Notes to the Limiting Values

1. I

= 98 mA; T

18

amb

= +70 °C.

2. Charge device model class B: equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor.

THERMAL RESISTANCE

SYMBOL PARAMETER THERMAL RESISTANCE

R

th j-a

from junction to ambient in free air

SOT146 65 K/W
SOT163A 85 K/W

February 1995 6

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

CHARACTERISTICS

The following characteristics apply for T
f

= 41.25 MHz (M), fSC= 54.25 MHz (M); input level V

SC

value (SC), IF input from 50 Ω via broadband transformer 1:1; video modulation DSB; residual carrier M: 10%;
video signal: NTC-7 composite; test circuit according to Fig.3 unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply (pin 18)

V

18

I

18

supply voltage note 1 4.5 5 5.5 V

supply current 72 85 98 mA
Vision IF amplifier (pins 1 and 2)
V

i VIF

input sensitivity (RMS value) at

45.75 MHz

input sensitivity (RMS value) at

58.75 MHz

maximum input signal (RMS value) at

45.75 MHz

maximum input signal (RMS value) at

58.75 MHz

∆V

o int.

internal IF amplitude difference

between picture and sound carrier

G

IF

R

i

C

i

V

1/2

IF gain control range see Fig.4

input resistance (differential) note 2 1.7 2.2 2.7 kΩ

input capacitance (differential) 1.2 1.7 2.5 pF

DC voltage − 3.4 − V
True synchronous video demodulator (note 3)
f

VCO

maximum oscillator frequency for

carrier regeneration
∆f

VCO

oscillator drift (free running) as a

function of temperature
V

0 ref

oscillator swing at pins 14 and 15

(RMS value)
∆f

t

acqu

V

pc

i VIF

vision carrier capture range M standard ±1.5 ±2 − MHz

acquisition time note 5; BL = 60 kHz −−30 ms

VIF input signal sensitivity for PLL to

be locked (RMS value; pins 1 and 2)
I

Loop

FPLL loop offset current at pin 4 note 7 −−±4.5 µA

= +25 °C, VP= 5 V, fpc= 45.75 MHz (M), fpc= 58.75 MHz (M),

amb

= 10 mV RMS value (sync-level); V

i IF1,2

−1 dB video at output − 60 90 µV

− 70 100 µV

+1 dB video at output 140 200 − mV

200 300 − mV

within AGC range;

− 0.7 1 dB
M standard;
∆f = 4.5 MHz

45.75 MHz 65 70 − dB

58.75 MHz 68 73 − dB

f = 2f

pc

125 130 − MHz

note 4 −−±750 Hz/K

fpc= 45.75 MHz − 100 − mV

= 58.75 MHz − 80 − mV

f

pc

note 6;

− 60 90 µV
maximum IF gain

i IF19,20

= 4.5 mV RMS

February 1995 7

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Composite video amplifier (pin 9; sound carrier off)

V

o video

V

9

R

9

I

int 9

I

9

∆V

o

∆G differential gain NTC-7 Composite − 25%
∆ϕ differential phase − 2 4 deg

B −1 dB video bandwidth M standard; 5 6 − MHz

S/N (W) signal-to-noise ratio; weighted see Fig.6 and note 9 56 60 − dB
S/N signal-to-noise ratio; unweighted 49 53 − dB

α

0.92

α

2.76

α

c

α

H

α

sp

RR ripple rejection at pin 9 see Fig.10; video

output signal (peak-to-peak value) see Fig.9 1.2 1.35 1.5 V
sync level − 1.5 − V
upper video clipping level V

− 1.1 VP− 1 − V

P

lower video clipping level − 0.3 0.4 V
output resistance note 2 −−10 Ω
internal bias current for

DC 1.6 2.0 − mA

emitter-follower
maximum output sink current DC and AC 1.0 −−mA
maximum output source current 2.0 −−mA
deviation of output signal 50 dB gain control −−0.5 dB

30 dB gain control −−0.1 dB

black level tilt note 8 −−1%

−3 dB video bandwidth C

< 30 pF;

9

78−MHz

RL> 1.5 kΩ; AC load

intermodulation at ‘blue’ see Fig.7 and
intermodulation at ‘yellow’ 60 66 − dB

note 10; f = 0.92 MHz

intermodulation at ‘blue’ see Fig.7 and
intermodulation at ‘yellow’ 59 65 − dB

note 10; f = 2.76 MHz

residual vision carrier (RMS value) fundamental wave

58 64 − dB

58 64 − dB

− 210mV
and harmonics

suppression of video signal
harmonics

note 11; C9< 30 pF;
RL> 1.5 kΩ; AC load

35 40 − dB

spurious elements note 12 40 −−dB

25 30 − dB

signal: grey level

VIF-AGC detector (pin 17)
t

resp

response to an increasing amplitude
step of 50 dB in the IF-input signal

response to a decreasing amplitude
step of 50 dB in the IF-input signal

I

17

charging current 55 75 95 µA
discharging current note 8 1.0 1.4 1.8 µA

February 1995 8

+3 dB at video output
pin 9

−3 dB at video output
pin 9

− 110ms

− 150 300 ms

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Tuner AGC (pin 12)

V

V

∆V

I

12

∆G

i

IF input signal for minimum starting
point of tuner take over (RMS value)

IF input signal for maximum starting
point of tuner take over (RMS value)

12

permissible output voltage note 2; from external

saturation voltage I

12

variation of take over point by
temperature

sink current see Fig.4

IF

IF slip by automatic gain control tuner gain current

input at pins 1/2;
R

=22Ω;

TOP

− 25mV

I12= 0.4 mA
input at pins 1/2;

=0Ω;

R

TOP

50 100 − mV

I12= 0.4 mA

−−13.2 V
source

= 1.7 mA −−0.2 V

12

I12= 0.4 mA − 0.03 0.07 dB/K

no tuner gain reduction −−5µA
maximum tuner gain

1.7 2.2 2.8 mA
reduction

− 68dB
from 20 to 80%

AFC circuit (pin 13; see Fig.8 and note 13)
S control steepness ∆I

f

IF

V

13

frequency variation by temperature note 4 −−±750 Hz/K
output voltage upper limit see Fig.8 VP− 0.6 VP− 0.3 − V

/ ∆f note 14

13

output voltage lower limit − 0.3 0.6 V

I

13

output current source 150 200 250 µA
output current sink 150 200 250 µA

∆V

13

residual video modulation current
(peak-to-peak value)

45.75 MHz 0.45 0.65 0.85 µA/kHz

58.75 MHz 0.38 0.55 0.72 µA/kHz

− 20 30 µA

February 1995 9

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Sound IF amplifier (pins 19 and 20)

V

i SIF

input sensitivity (RMS value) at

41.25 MHz
input sensitivity (RMS value) at

54. 25 MHz
maximum input signal (RMS value) at

41.25 MHz
maximum input signal (RMS value) at

54.25 MHz

G

R
C
V

SIF

i
i

19/20

SIF gain control range see Fig.5

input resistance (differential) note 2 1.7 2.2 2.7 kΩ
input capacitance (differential) 1.2 1.7 2.5 pF

DC voltage − 3.4 − V
SIF AGC detector (pin 5)
I

5

charging current 3.5 5 6.5 µA

discharging current 4.5 6 7.5 µA

−1 dB at intercarrier

− 50 80 µV

output pin 10

− 70 100 µV

+1 dB at intercarrier

40 80 − mV

output pin 10

80 110 − mV

41.25 MHz 59 64 − dB

54.25 MHz 59 64 − dB

Single reference QSS intercarrier mixer (pin 10)
V

o

IF intercarrier level (RMS value) SC

1

75 100 125 mV

B −3 dB intercarrier bandwidth upper limit 7.5 9 − MHz

α

H

residual sound carrier (RMS value) fundamental wave − 2 − mV

harmonics − 0.75 − mV
R
V
I

int10

10

10

output resistance note 2 −−10 Ω
DC voltage − 2.0 − V
internal bias current for

DC 1.5 1.9 − mA

emitter-follower

I

10

output current (RMS value) AC; RL> 1 kΩ;

−−1.2 mA

C10< 50 pF

output current DC; R

> 1 kΩ 2.0 2.5 − mA

L

February 1995 10

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Limiter amplifier (pin 11)

V

i FM

R

11

V

11

FM-PLL demodulator

f

i FM

t

acqu

FM operation (standard M, N) (pin 6; notes 15 and 15a)
V

o AF

∆f

AF

∆V

o

V

7

R

6

V

6

I

6

B −3 dB audio frequency bandwidth 100 125 − kHz
THD total harmonic distortion without ceramic filter;

S/N(W) signal-to-noise ratio; weighted FM-PLL only;

V

sc

α

AM

α

6

∆V

6

RR ripple rejection at pin 6 R

input signal for lock-in −−100 µV
input signal (RMS value) (S+N)/N = 40 dB − 300 400 µV
permitted input signal (RMS value) 200 −−mV
input resistance note 2 480 600 720 Ω
DC voltage − 1.8 − V

catching range of PLL 4.0 − 7 MHz
holding range of PLL 3.5 − 8 MHz
acquisition time −−4µs

AF output signal (RMS value) 25 kHz FM deviation;

400 500 600 mV
see Fig.3 and note 16;
Rx= 0 Ω

clipping level (RMS value) THD < 1.5% 1.3 1.4 − V
frequency deviation THD < 1.5%

=0Ω; see Fig.3 −−±53 kHz

R

x

= 470 Ω; see Fig.3 −−±106 kHz

R

x

temperature drift of AF output signal − 3710
DC voltage at decoupling capacitor voltage dependent on

1.2 − 3.0 V

−3

dB/K

VCO frequency; note 17

output resistance note 2 −−100 Ω
DC voltage tracked with supply

− VP/2 − V

voltage

output sink and source current DC and AC −−1.1 mA

− 0.15 0.5 %

∆f = 25 kHz

55 60 − dB
with 75 µs de-emphasis;
25 kHz FM deviation;
CCIR468-4

residual sound carrier and

−−75 mV

harmonics (RMS value)
AM suppression with 75 µs de-emphasis;

46 50 − dB
AM: f = 1 kHz; m = 0.3
refer to 25 kHz FM
deviation

mute attenuation of AF signal pin 6 70 75 − dB
DC jump of AF output terminal for

switching from FM to mute state

FM PLL has to be in
locked mode

−±50 ±150 mV

and vice versa

= 470 Ω; see Fig.10 22 28 − dB

x

February 1995 11

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Single reference QSS AF performance for FM operation (standard M) notes 18 and 19

picture to sound carrier ratio: PC/SC = 7 dB
sound attenuation of VIF SAW filter: minimum 33 dB

measurement condition: PC/SC ratio at pins 1 and 2; note 20 40 −−dB
S/N(W) signal-to-noise ratio; weighted 25 kHz FM deviation; CCIR 468-4; 75 µs de-emphasis

black picture 50 56 − dB
white picture 47 53 − dB
colour bar 45 51 − dB

Notes to the characteristics

1. Values of video and sound parameters are decreased at VP= 4.5 V.

2. This parameter is not tested during production and is only given as an application information for designing the
television receiver.

3. Loop bandwidth BL = 60 kHz (natural frequency fn= 15 kHz; damping factor d = 2; calculated with sync level within
gain control range). Resonance circuit of VCO: Q0> 50; C

2.7 V).

4. The oscillator drift is related to the picture carrier frequency (at external temperature-compensated LC-circuit).

5. V

= 10 mV RMS; ∆f = 1 MHz (VCO frequency offset related to picture carrier frequency); white picture video

i IF

modulation.

6. V

for 1.2 V (peak-to-peak value) output signal at composite video output pin 9; PLL is still locked.

i IF

7. Offset current between pin 4 and half of supply voltage (V = 2.5 V) under the following conditions: no input signal at
VIF input (pins 1 and 2) and VIF amplifier gain at minimum (V17=VP).

8. The leakage current of the AGC capacitor should not exceed 100 nA at M, N standard. Larger currents will increase
the tilt.

9. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 9). B = 4.2 MHz weighted
in accordance with CCIR 567 at a source impedance of 50 Ω.

10. The intermodulation figures are defined:

α

= 20 log (V0at 3.58 MHz / V0at 0.92 MHz) + 3.6 dB; α

0.92

α

= 20 log (V0at 3.58 MHz / V0at 2.76 MHz); α

2.76

2.76

11. Measurements taken with SAW filter M3951M (Siemens, M standard); modulation: VSB, f
bandwidth BL = 60 kHz.

12. Measurements taken with SAW filter M3951M and M9352M (Siemens, M standard); loop bandwidth BL = 60 kHz,
frequency range = 10 kHz to 5 MHz. Sound carrier on, PC/SC ratio 7 dB (transmitter).

13. To match the AFC output signal to different tuning systems a current source output is provided. The test circuit is
given in Fig.8. The AFC-steepness can be changed by the resistors R11 and R12.

14. Depending on the ratio ∆C/ C0of the LC resonant circuit of VCO (Q > 50; see note 3; C0= C

15. Input level for second IF from an external generator with 50 Ω source impedance. AC-coupled with 10 nF capacitor,
f

= 400 Hz, 25 kHz (50% FM deviation) of audio references. A VIF/SIF input signal is not permitted. Pins 5 and

mod

17 have to be connected to positive supply voltage for minimum IF gain. S/N and THD measurements are taken at
75 µs de-emphasis. The FM demodulator steepness ∆V

a) Second IF input level 10 mV RMS.

see Fig.11; C

ext

value at 0.92 MHz related to black/white signal

0.92

≈ 10 pF (loop voltage approximately

int

value at 2.76 MHz related to colour carrier.

> 0.5 MHz, loop

video

+ C

int

/∆fAFis positive.

o AF

ext

).

February 1995 12

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

16. Measured at de-emphasis circuitry with an FM deviation of 25 kHz (f
500 mV RMS (Rx=0Ω; see Fig.3). By using Rx= 470 Ω the AF output signal is attenuated by 6 dB (250 mV RMS).
For handling an FM deviation of more than 53 kHz the AF output signal has to be reduced by using Rxin order to
avoid clipping (THD < 1.5%). For an FM deviation up to 100 kHz an attenuation of 6 dB is recommended with
Rx= 470 Ω.

17. The leakage current of the decoupling capacitor (2.2 µF) should not exceed 1 µA.

18. For all S/N measurements the used vision IF modulator has to meet the following specifications:

- Incidental phase modulation for black-to-white jump less than 0.5 degree.

- QSS AF performance, measured with the television-demodulator AMF2 (audio output, weighted S/N ratio) better
than 60 dB for 6 kHz sinewave black-to-white video modulation.

19. Measurements are taken with SAW filter M3951M (Siemens) for vision IF (suppressed sound carrier) and M9352M
(Siemens) for sound IF (suppressed picture carrier). Input level V

20. The PC/SC ratio is calculated as the addition of TV transmitter PC/SC ratio and SAW filter PC/SC ratio. This PC/SC
ratio is necessary to achieve the S/N(W) values as noted. A different PC/SC ratio will change these values.

= 400 Hz) the typical AF output signal is

mod

= 10 mV RMS, 25 kHz FM deviation.

i SIF

February 1995 13

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

(1) depends on TV standard

(2) de-emphasis circuitry for 75 µs

(3) see note 16 of the characteristics

(1) depends on TV standard.

(2) de-emphasis circuitry for 75 µs.

(3) see note 16 of the characteristics.

Fig.3 Test circuit.

February 1995 14

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

Fig.4 Typical VIF and tuner AGC characteristic.

February 1995 15

Fig.5 Typical SIF AGC characteristic.

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

SC =sound carrier
CC = chrominance carrier
PC = picture carrier
all with respect to sync level

The sound carrier levels are taking into account a
sound shelf attenuation of 20 dB.

Fig.6 Typical S/N as a function of IF input voltage. Fig.7 Input signal conditions.

February 1995 16

Fig.8 Measurement conditions and typical AFC characteristic.

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

Fig.9 Video signal levels on output pin 9 (sound carrier off).

Fig.10 Ripple rejection condition.

February 1995 17

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

(1) depends on TV standard.

(2) de-emphasis circuitry for 75 µs.

(3) see note 16 of the characteristics.

Fig.11 Application circuit.

February 1995 18

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

TDA9808

February 1995 19

Fig.12 Internal circuits.

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

PACKAGE OUTLINE

DIP20: plastic dual in-line package; 20 leads (300 mil)

D

seating plane

L

Z

20

e

b

TDA9808

SOT146-1

M

E

A

2

A

A

1

w M

b

1

11

c

(e )

1

M

H

pin 1 index

1

0 5 10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A

A 

A 

UNIT

inches

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

max.

mm

OUTLINE
VERSION

SOT146-1

1 2

min.

max.

1.73

1.30

0.068

0.051

IEC JEDEC EIAJ

  SC603

b

b

1

0.53

0.38

0.021

0.015

0.36

0.23

0.014

0.009

REFERENCES

cD E e M

(1) (1)

26.92

26.54

1.060

1.045

6.40

6.22

0.25

0.24

E

10

(1)

M

e

L

1

3.60

8.25

3.05

7.80

0.14

0.32

0.12

0.31

EUROPEAN

PROJECTION

H

E

10.0

0.2542.54 7.62

8.3

0.39

0.010.10 0.30

0.33

ISSUE DATE

w

92-11-17
95-05-24

Z

max.

2.04.2 0.51 3.2

0.0780.17 0.020 0.13

February 1995 20

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

SO20: plastic small outline package; 20 leads; body width 7.5 mm

D

c

y

Z

20

11

TDA9808

SOT163-1

E

H

E

A

X

v M

A

pin 1 index

1

e

0 5 10 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

A

max.

2.65

0.10

A

1

0.30

0.10

0.012

0.004

A2A

2.45

2.25

0.096

0.089

0.25

0.01

b

0.49

0.36

p

cD

0.32

0.23

0.013

0.009

3

0.019

0.014

UNIT

inches

Note

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

10

w M

b

p

scale

(1)E(1) (1)

13.0

12.6

0.51

0.49

eHELLpQ

7.6

1.27

7.4

0.30

0.050

0.29

10.65

10.00

0.42

0.39

Q

A

2

A

1

1.4

0.055

1.1

0.4

0.043

0.016

detail X

1.1

1.0

0.043

0.039

(A )

L

p

L

0.25

0.01

A

3

θ

0.25 0.1

0.01

0.004

ywv θ

Z

0.9

0.4

0.035

0.016

o

8

o

0

OUTLINE
VERSION

SOT163-1

February 1995 21

REFERENCES

IEC JEDEC EIAJ

075E04 MS-013AC

EUROPEAN

PROJECTION

ISSUE DATE

92-11-17
95-01-24

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator

SOLDERING
Introduction

There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.

This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in

“IC Package Databook”

our

DIP

OLDERING BY DIPPING OR BY WAVE

S
The maximum permissible temperature of the solder is

260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.

The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.

R

EPAIRING SOLDERED JOINTS

Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.

SO

REFLOW SOLDERING

(order code 9398 652 90011).

). If the

stg max

TDA9808

method. Typical reflow temperatures range from
215 to 250 °C.

Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.

AVE SOLDERING

W
Wave soldering techniques can be used for all SO

packages if the following conditions are observed:

• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.

• The longitudinal axis of the package footprint must be
parallel to the solder flow.

• The package footprint must incorporate solder thieves at
the downstream end.

During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.

Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.

A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.

EPAIRING SOLDERED JOINTS

R
Fix the component by first soldering two diagonally-

opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.

Reflow soldering techniques are suitable for all SO
packages.

Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.

Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating

February 1995 22

Philips Semiconductors Preliminary specification

Single standard VIF-PLL with QSS-IF and

TDA9808

FM-PLL demodulator

DEFINITIONS

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

February 1995 23